Molding-machine.



No. 878,064. PATENTED FEB. 4, 1908.

F. HERBERT.

MOLDING MACHINE.

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f .iftormp No. 878,064. PATENTED FEB. 4, 1908. F. HERBERT.

MOLDING MACHINE. APPLICATION FILED DBO. 20. 1905.

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FRED HERBERT, Ol" BIRTLEY, ENGLAND.

MoLnrNG-MACHIN.

Specification of Letters Patent.

Patented Feb. 4, l190e.

Application iled December 20.1905. Serial No. 292549.

To all whom it may concern:

Beit known that l, FRED HERBERT, a sub-- ject of the King of GreatBritain, residing at Birtley, county Durham, England, have invented acertain new and useful Improvement in Moldingddachines, of which thefollowing is a specification.

This invention relates to machines for forming sand moldsl Y The objectof the invention is to provide a machine for forming sand or other moldswhich is simple in construction and efficient inv operation.

'- A further object is to provide a machine of the character referredtowhich is practically continuous in its operation when once started up,and which produces a machine made mold.

A further object is to provide means for forming a mold which ishomogeneous throughout, and wherein the sand is compressed toabsolutelyv uniform density throughout the entire length` of the mold,

and whereinthe mold is formed absolutely I patterns for forming thesocket and spigot portions of the mold and combining such patterns in coerative arrangement and loca' tion with re erence to the other partsofthe machine.

A further object of the invention is to provide means for regulating andmeasuring the `quantity of sandrequired for use in forming the mold, andin cooperative arrangement with reference to other features of themachine.

A further object is to provide means for efficiently supportiiigandguiding the main pattern so as to insure Aan absolutely true movementthereof with reference to the flask when advanced to, or retracted from,its work.

Other objects of the invention will appear more fully hereinafter.

The invention consists substantially in the construction, combination,location and relative arrangement of parts, all as will be more fullyhereinafter set forth, as shown in the accompanying drawings, andfinally pointed out in the appended claims.

Referring to the accompanying drawings and the various views andreference signs appearing thereon; Figure 1 is a view in'longitudinalsection of a molding machine constructed in accordance with, andembodying the principles of, my invention, the main pattern having beenraised sufficiently far vfor the ramming head on the upper end thereofto project through the socket pattern, and the displacing or measuringtube being inserted through the flask and resting on the ramming head ofthe main pattern, the socket pattern being raised to working positionand the sand introduced ready toV begin the operation of forming themold. Fig. 2 is a view in longitudinal section showing the main andsocket patterns in their'extreme advanced' positions. lar view showingthe mold completed and all the parts except the spigot pattern and gateson same, in withdrawn or initial position, and out of the way ready forthe mold and iiaslr to be removed.

p Fig. 4 is a view in plan showing means for securing the mold liaslr inposition. Fig. 5 is a broken view in section on the line 5, 5, Fig. 4.Fig. 6 is a view similar to Fig. 5, on the line 6, 6, Fig. 4. Fig. 7. is-a broken detail view in section,`

somewhat enlarged, showing the auxiliary socketpattern and means foradjustably supporting the same. Fig. 8 is a detail view 1n plan of acentering spider for the displacing tube. Fig. 9 is a view inlongitudinal secplacing tube or measuring tool, and the auxiliaryspigot'pattern.

The same part is designated by the same reference sign wherever itoccurs throughout the several views. i

In the operation of forming sand molds for use in casting pipes, andparticularly pi es of great length and large size, great diflicu ty hasheretofore been ex erienced in securing absolutely true molds of)uniformdensity and homogeneity throughout the length thereof, due to thepeculiar characteristics of the sand employed when 4subjected to theopera- Fig. 3 is a simi- .tion showing means for supporting the dis-`-the mold at or near such ends tovbe crushed 'tionsl and manipulationsnecessary. in the.

production of the molds. It is a common expedient to su ply the sand tothe fiask in which the mol is formed and to ram the sand so supplied byhand. This, however, is not only slow and tedious but also results ininequalities in the density ofthe mold at various points, whichinequalitiescause unequal expansion or contraction in the metal of theipe which, of course,'is a serious defect. n machines where Apowerramming', is attempted there has been a failure to secure absolutealinement of the ramming ytool in traversing the great length necessaryto form a longmold, with the result that the mold is warped or bent andnot truly cylindrical throughout, or is crushed or broken down in\parts, ,thereby being rendered ilnfit for use.

Another defect common to machines of this character is that the sand freuently gains access to the bearing surfaces o the working parts of themachine, or the stuffing boxes or glands, and rapidly cuts` or-wears outsaid surfaces or parts, and hence quickly destroying theutility of themachine. `Again,' it is common and desirable to vform .the molds "withsocket .ends 'whereby the i es, when produced.' are of proper formancfsliape, and also gatesv on the spigot ends so that the metal tofform the lipes may be readily introduced to the mo d. Y Greatdiliiculty has heretofore been. experienced in forming the 'socket andspigot endsof the molds by reason 'of the sand requiring s ecialmanipulation to form these ends, an the tendency of or broken under themanipulations neces- "sary in their formation. Another difficultyexperienced in machines of this character -is the inability to properlygage and measure the quantity of sand required to form'e. mold in themachine itself. y

vIt is among the special objects and purposes ofmy present invention tolovercome these and other diiflculties and objections in machines ofthis character, and to produce a simple and efficient machine which,when started up, operates continuously or substantially so, in theproduction of a complete mold, wherein the mold is absolutely vtrue andof uniform density throughout its entire length; wherein the sand isexcluded from the Working parts or contacting; surfaces, stufing boxesand glands of the lfmachine; wherein auxiliary' patterns for,.-formingthe socket and spigot -ends of the-meldare employed andarrangedfincoperatlve location and arrangement with reference'to' theother working parts of the4 machine; ,wherein means areprovided-for-efliciently 'guiding a power operated main .pattern and inabso-- ute alinemenu while performing itsv work,- and which, when itcompletes its advancing movement, vextends throu hout and fills th,`entire-length of the mol' formedor conr--l` connection D3.

pressed thereby; 'wherein the quanti-ty of sandmay be readily regulatedand measured when supplied to the machine; wherein interruption oftheoperation of themachine through 4freezing or frost is prevented; andwherein molds or'pipes of varying or differing sizes or diameters-may besame machine.

In the accomplishment of these various objects and 'purposes I employ acontaining well or casing C, which, in the form illustrated, lcomprisescylindrical sections C', which casing contains the power mechanism bywhich the various patterns are caused to perform their various functionsWithin the casing issupported in'v any suitableor convenient manner, as,for instance, upon a base plate D a long stationary tubular guidecylinder D, which is open at its upper end and closed at its lower end.This cylinder forms the power cylinderfor operating the variouspatterns, power mediums such as water, steam orcompressed airbelngmtroduced to,

readily produced on the the lower end of the cylinder, from-any suitableor convenient source through the inlet If desired, the' base plate D',may be supported upon a flange -D2 formed in the base of the casing C.Mounted upon, or telescoped over the power cylinder D, and

guided thereby isa carrying cylinder E for the main pattern F. Thecarrying cylinder E, is closed at its upper end, and at its lower endisiitted to the 'exterior surface of the poWercylinder by means of apacking gland, as clearly shown. vBy the introduction of the powermedium lto the lower end of the c linder D, the carrying cylinder iscaused to s ide vertically upon the power cylinder as a guide, and byopening the lower end of the powercylinder to exhaust the patterncarrying cylinder E, is permitted to slidedown the power cylinder to itslowermostor initial pe,- sition, being aided, if desired, or necessary,by weights O. Thus the cylinder D, performsthedouble function ofv a'power cyl'- inder and 'a stationary guide for thev pattern carryingcylinder, and vover or upon which` said carrying cylinder is telescoped,thereby affording an efficient ,guide for the 'carrying cylinder-through its entire stroke and insuring accuracy in the alinement 4ofsuch,

movement. Especially at the beginning of i the stroke of the patternthepower cylinder serves asa guide and that is the time lwhen a true guideis most needed, for the reason that after tl.v .pattern has -been forcedfive orsix feet into the mold, thenythe mold. itself also forms a uidefor themain pattern. Morel over, in t e arrangement referred tothebear'- ing surfaces of said cylinders are inclosed and hence protectedagainst access of sand which would' rapidly Wear such surfaces anddestroy "the utility of the machine. Moreover, -this arrangementenablesthe power mchanismfto belocate'd beneath-the flask lutely straight andtrue.

, ploy in which the mold is formed, and beneath the supply of sandtotheflask, as will more fully appear hereinafter, and hence permittinggravity to-act upon any particles of falling sand to keep the same clearof the moving parts, and this result is also contributed to by locatingthe stufling box or gland at the lower end of the carrying cylinder.l Inits broadest scope, however, my invention is not to be `limited orrestricted in respect to these details. A f

The main pattern F, is mounted upon or carried by the carrying cylinderE. This pattern, in the particular embodiment of my invention selectedfor illustration of the principles involved, comprises a hollowcylinder, open at its lower end and closed ,at its upper end,'and, inuse, this cylinder' is telescoped over 4the upper closed end of thecarrying cylinder E, and the lower end ofthe pattern rests upon asuitable flange or projection carried by the carrying cylinder, and bywhich the pattern is supported and properly centered. The mainpatternshould be of a length greater than the length of the mold to be formed,and the stroke of the carrying cylinder should be such as to carry theramming head of lthe main pattern en-- tirely through the mold. Fromthis it will be seen that since the 'atterri is absolutely straight andis accurate y guided in its movement/s, the mold is formed absolutelytrue and straight, and since the spigot and socket patterns are guidedto their 'work by the main pattern every part of the mold is abso- Theupper or entering end vof the main pattern is preferably curved, beveledor rounded off somewhat spherically to form a ramming head which willenter the mold with facility and be advanced therethrough in theperformance of its proper function. 1n practice, and as shown, 1 preferto leavea slight space between the inner Wall of the main pattern andthe exterior wall of the carrying cylinder and .to this space 1 proposeto introduce a heating medium whereby,'when in o eration, the mainpattern may be kept in a eated condi.

, tion'.v 1 have found in practical'operation,

that this is an important feature in machines of this class as the mainpattern, when heated, is enabled to perform its work of ramming, packingand smoothing the surface of the sand in forming the mold with greaterfacility and better results than when the attern is forced into andthrough the mold in the cold.

The heating medium is supplied in any convenient manner, as, forinstance, through pipe connection F. Where steam is emed as the heatingmedium, any condensationis permitted to drain 0H through leak holes F2.

In addition to `the advantage derived1 from heating the, main pattern soas to present ,ar

heated surface to the sand in forming the mold, l am also enabled toavoid the serious objection frequently encountered in sand moldingmachines andv plants, of freezing up the machinery in cold or frigidweather, by the formation of frost on the metal surfaces, and whichoften necessitates the ,entire shutting down of the machine or plant.

At oi adjacent its lower end, the main pattern is provided with a flangeor projection G, adapted to engage rnderneath the socket pattern as willpresently appear more fully. And at its upper or entering end, ashoulder orseat F3, may be provided upon the main pattern to receive andsupport the displacingor measuring tube or tool to be referred to morefullyvhereinafter.

From the construction and arrangement of the main pattern, asabovedescribedVand the manner of supporting and operating the same, it willbe readily understood that a machine embodying the principles of myinvention is readily adapted for use in makingA differing sizes andlengths of molds without any other change or modification except merelyremoving the main spigot, and socket patterns together with the socketpattern casing, and substituting other patterns and casing of theproper. dimension therefor. The machines are ordinarily designed for thegreatest length of molds, and therefore shorter lengths may be formed byemploying the proper lengthof flask and different diameters of molds areformed by substituting the re uired size of main pattern. This is avalutabile feature of my invention as it enables the same machine toform molds for pi es of any desiredv range'of length or size.

will now describe a construction and arrangement of socket formingpattern embodying the principles of my invention and the manner ofmounting and operating the saine.

Pipes as usually cast are provided at one end thereof with an enlargedor flared mouth forming a socket to receive tli'e proximate end of thenext adjacent pipe section, To form this socket in casting the pipe itis necessary to-properly shape the corrisponding end of the said mold.Great diiculty has heretofore been experienced in properly shaping themold for this purpose.

1f the socket end of the mold is formed and packed before the mold body,then the body forming pattern when advanced to perform its work willcompress the loose sand adjacent the packed or rammed 'sand of thesocket.

. orms the socket is advanced along with theV advancing end of the mainor body forming pattern until the socket pattern attains its completeadvanced or working position, and l operated in many speciiicallydiHerent Ways.

thereafter the main or body forming pattern continues its advancingmovement through the socket pattern, then the saine objectionable resultand consequences, as above noted',

will follow. it has been attempted to Aform. the body ol the mold firstvand then to forni the socket end of the mold With a suitable pattern,but this plan has been altogether unsatisfactory in. practice for thereason that in such case the danger is incurred of breaking down theformed end of" the mold when the socket pattern has been advanced to itswi'irking position, and, moreover, difliculties are encmmtered in.properly centering the socket pattern and removing it to permit theremoval oi the llask with the completed mold, and in lailure to secureuriitorm and homogcnx-fous density throughout the'mold. ln order toovercome these and other diliiculties and. objections, l employ a socketforming pattern, separate l'rom. the main or body forming pattern, andsupport the4 same in proximity to the lower end of the flask, andwl'iich., in cooperation with the ilask, the measuring tool, the ramminghead ol thc vmain )atterri and the socket pattern support, orms achamber in which the loose sand is received prior to the moldingmovements ofthe main and socket patterns. The socket pattern is in theform ol: a ring through which the main or body pattern moves, '.l`l1emovement of the main or body pattern,` which occurs in advance ol" themovement of the socket pattern, causes therarmning head of' the mainpattern to compress that portion of the socket forming-sand whichsurroumfls said head so that when the socket pattern is suli sequentlyraised to perform its molding function it lifts and raises the loosesand supported. upon its upper end into the space between theinsidesurface of the enlarged lower end ol the vlask and the side of the mainor body jliattern'and against the sand innnediately above. and which.has already been rammed or compressed by the ramming head ofthe mainpattern, therel'iy compressving and ramming tlieisand to form the socketportion of' the mold and the adjacent end of the body of the mold.lDr-rscribing'more in detail my 'construction and arrangement l. employa socket pattern in the torni ofv a ring and arrange the same toencompass or encircle the advancing or entering end oli. themainjmttern, when said main pattern is i-n its lully retracted position,as clearly shown in. thgl drawings,- the socket pattern thereby forming'a guide for the main pattern and through which the 'main patternoperates. The socket pattern is carried by a movable.I support G', bymeans of which. it may he properly centered and carried into position tobe advanced to its work and withdrawn out ot the way lior the completedmold to be removed.. The support G", .may be ln the particular lorinshown, to which, however, my invention is-not to be limited orrestricted, the support G" is carried by any suitable or .convenientsource." ln this manner the socket pattern may be centered an'dniovedinto or retaoted from position to j be advanced to its work, and suchmovement is eili'ected independently of the operation of the mainpattern. The socket pattern is advanced to its Work froinits 'initialposition by, or coincidently with the operation of the main pattern'bythe flange or projection F6, on the main pattern engaging Abeneath thesocket pattern, as the main pattern approaches the vlimit of its workingstroke,`

whereby the socket pattern is forced into or against the sand to formthe socket thereon, and with the same degree oi' pressure that isexerted upon the main. pattern. vFrointhis construction it Will' be seenthat when the socket pattern is advanced to perform its ramming work theramming action thereof is resisted not only by the rammed sand of thelwdvv'l ol the mold, ybut also by the flask and the main pattern whichform supports f or'the rammed body ot the `mold and hence the ,danger isavoided ol crushingor breaking down the formedbody of the mold when thesocket pattern is advanced to its work. And by first advancing the mainpattern and alerwards the socket pattern, instead of the reverse'` ofthis operation, vthe vdanger is avoided ot the advancing beveled end ofthe main pattern l'il'ling' the sand away from the rammed socket.leaving a fault in the mold at the point where the socket joins the bodyof the mold. These are important and valuable features ot my inventionand result from employing a main pattern which is as long or longer thanthe mold to be formed, and lrom the relation and operation olt the partsas described.

' It is impossible to determinebeforehand forming the socket oi thepipe', and 'fre-l quently in the injury il'v not the actual dcstructlonand waste ol' the nioldwhile being formed or of the pipe when cast.There'l'ore Any inequalities in the density oi" it is desirable toprovide a range of adjustment o 'l' the positionoi the socket patternrelative toits su-pportin order to regulate the amount of sand to beused in iorniing the sockel. end of the mold. This result may bcaccomplished in `many speciiically'different ways. l have Shown a simpleconstruction A initialposition of the of' movement of the main pattern.

for the purpose, to which, however, Ido notl motion, may be carried outcontinuously.

desire to be limited or restricted wherein the l It is also desirable toprovide a preliminary support G', or openings through supporting studsor bolts G4, upon which the socket pattern rests. By inserting the studsor bolts in the desired holes G5, 'the socket pattern relative. to itssupport G','may be regulated and 'adjusted. l

The mold is formed in a ffaskA, and in the accomplishment of the bestresults it is important that the fiask be mounted, centered and securedin position with the bore thereof' in true and accurate alinement withthe line It is also desirable to provide means whereby the flask may beeasily handled for placing the same in position, and for the mold hasbeen completed. I have shown a simple and efficient construction foraccomplishing these objects and-purposes, but my invention, in theserespects, is not to be limited or restricted to the exact and isprovided with a series of holes i Gi', see Fig. 7, to receive thereiremoving the saine when specific construction and arrangement of the fdetails shown. In the particular forni illusi proper positions and themain and socket trated, the flask A, is carried upon a truck or carriageA', the wheels A2, of which, operate upon rails A3.' At a point adjacentthe receiving and centering position of the flask for use, the rails A3,are provided with movable sections A, carried by pluiigers A, arrangedto operate in cylinders A, to which a motive fluid may be supplied inany suitable or convenient manner, whereby the rail sections A4, may bemaintained Aiii proper level relation with respect to thcrails A3, forthe wheels A2, of the trucker carriage A', to readily pass `onto 4thesaid sections A, from the rails A3.

By exhausting the motive fluid from cylinv ders A, the rail sections A4,and the truck or4 carriage A',

with the flask supported thereon, are lowered until the carriage A',rests upon the top plate B, of the main casing C, said top plate havingopenings therethrough, through which the rail sections A", may be thuslowered. In order to center and secure the flask in proper position manyspecifically different constructions niay be employed. I have shown asiml le construction for. accomplishing this resu t, but to which I donot desire to be limited or restricted, wherein I employ centering pinsA7, adapted to be received vertically through lugs A8, on carriage ortruck A', as said carriage or truck is lowered into working position, asabove described. Suitable'cotters may be inserted transversely in theprojecting ends of pins A7, as clearly shown 'in Fig. 4, to secure andlock the truck or carriage A', in its centered position.

As hereinabove noted, in machines of' this class it is desirable tosupply to the flask at one time the entire quantity ofsand for a mold,in order that'the mold forming' operation, when the main pattern-is onceset in `vthevquantity of sand supplied according to the requirements ofthe niold to be provided. Many specifically arrangements foraccomplishing these various objects and purposes may be employedt I haveshown a simple and efficient construction and arrangement for thepurpose, to which, however, I do not desire to be limited or restricted,wherein I employ a displacing or measuring tube H, which, -when theflask A, is securedin its centered position, is inserted into thc flask,'until thelower end thereof is received upon; the shoulder or-seat F3,iii the enterii'ig end of the main pattern, thereby being centered atits lower end upon the upper end of the main pattern. The upper end ofthe displacing tube may be center-ed in the upper end of the flask inany suitable or convenient manner, as, for 4in patterns in theirassembled relation ready to be put in operation to forni a mold, thesand is introduced 'into the space between the eX- terior surface ofthedisplacing tube, and the interior surface ofthe flask, the column ofsand being supported by the main and socket 'patterns and the ffask andmovable-supporting ring G', the position of the socket pattern in itssupporting ring G', serving to regulate the amount of sand to beeniloyed .in forming the socket end of the mo d, and the displacing tube H,serving to vregulate vand measurethe quantity of sand su plied to theflask to form the mold, while at tli enabling the entire quantity ofsand to form the niold to be supplied to the flask at one time, andhence enabling the mold forming and' shaping operation to be carried onuninterruptedl-y. As the main pattern advances into the sand filledffask to perform its work, the displacing tube is pushed out by theadvancing end ofjsaid pattern, thereby forming a retaining support forthe decreasing length ofthe loose column of sand in advance ofthe end ofthe main pattern, and until the ramniing head of' the Amain pattern .com

letes its Work of -raniming or compressing t e sand.

When the end of the main pattern has advanced entirely through theflask, and the displacing tube is forced entirely out of the flask; saidtube maybe removed and sup orted out of the way, or in convenientposition` for use in forming the next mold. complished in -manyspecifically dierent ways. vI have shown a simple arrangement, to which,however, my invention is not to be limiterhor restricted, wherein achain H4, is

connected atene` end of the4 displacing tule.;

e same time This may be ace different constructions and .j

iso

Y. flask is rbeing placed in position.v

thereto.

.-In order toproperly shape the upper end of the mold employ aspigot-pattern I.

manner in position for use. In the form shown said pattern is supportedby chains I',

passing over overhead pulleys I2, and Having counterbalancing weightsIf, connected The displacing tube passes through the bore of the spigotpattern, and when said tube has completed its work and is removed,

l the spigot pattern is lowered-into position to be received, seated andcentered upon the y end of the main pattern which projects above asshown in Fig. 2,

the upper end of the iiask,

v when said main pattern has completed its advancing l movement. xpattern is thusvseated and centered upon the end of the main pattern, itis' secured thereto in any convenient manner, as, for instance,

' rounded, curvedor tapering surface of the` by means of a locking pinor bolt I4: Now,

,by reversing the direction of travel of -tliel main pattern, and as themain pattern begins its 'withdrawal movement, the spigot pattern iscarried down with it into the upper end ofthe mold to properlyshape suchend.V When this work is completed the withdrawal movement of the mainpattern is interrupted and -the spigot pattern is detached from the endthereof and is returned toits retracted position out of the way andready for the next-operation', while the main pattern resumes lits,withdrawing movement through the mold.

During vthe advancing movement of 'the main pattern into and through themold, the

vsand is' uniformly rammed and compressed throughout-the entire lengthof the mold, the' advancing end of the main pattern performing theramming function,I and the remaining the com ressed or rammed column ofsand, and slee ing or smoothing the surface of the portion of the`exterior surface of the main pattern as it advances longitudinallythrough the bore of the mold serving as a support for', and, in turn,being supported and guided by bore vof vthe mold,.being greatly aidedin'this work by reason of the fact that the surface vthereof whichcontacts With the surface of the compressed sand may be heated, as aboveexplained. As the main pattern aproaclies the limit of its rammingstroke the' ange F", on the lower end thereof, engages under 'the bottomedge of the auxiliary` soc-ketpattern thereby raising such socket.pattern within its floating or movable su porting ring, and intoposition to effect t e lhis pattern is supported in any convenientpro'er shaping of the socket end of the' mo d. As the advancing end ofthe main pattern is finally carried. beyond' the end of the flask, thedisplacing tube is removed, the spigot pattern is lowered into positionand secured on the protruding end of the main pattern, and the 'movementof the main d Aatterri reversed to withdraw the sanieback t irough theformed mold. l/Vhenr the Withdrawal movement of said pattern proceeds tothe desired extent `for the spigot pattern to perform its work ofshaping the u per end ofthe mold, said spigot pattern is re eased fromthe main pattern and the latter continues its withdrawal lmovementthrough the mold, and in so doing serves to iron andI smooth the surfaceof the'bore of the mold, thereby re-y moving any roughness in suchsurface. After the main pattern is wholly withdrawn the socket patternand its casing are lowered, the flask truck' or carriage raisedand the`flask containing the completed mold removed. y A new flask is thenplaced in p'osition-and the various operations are repeated. The moldproduced as above described is machine made throughout and-by reason ofthe construction described is absolutely accurate', true'and homogeneousthroughout,

and the various operations necessary to make la complete mold are' accomlished quickly and rapidly, enabling a mac ine tov have a very largedaily capacity; andas there are no delicate parts'- to 'be broken or to.get out of repair, and as sand particles are prevented froin gainingaccess to the working parts of the power mechanism, the machine willstand long and hard usage before yit requires repair, 'By the verticalor upright arrangement of the machine, as shown, the sand for formingthe mold may be delivered from a pointrabove the moldforminormechanisi'n. It will also be seen that by locating the power cylinderbelow the operative posiioo tion of the flask, said cylinder mayl besoextended in length that its upperend maybe in comparatively closeproximity to the lower end of the flask, and since'this cylinder lisheld stationaryg'it serves as an efficienty guide'for the vcarryingcylinder and main pattern to maintain the line of movement thereof trueand accurate. l l

In 9, I have indicated a conveniently arranged molding plant, referencesign J designating a pressure mechanism for the operating fluid suppliedto the machine, and P, a

mold forming operation is completed. After the molds have been cast andsufiiciently cooled, the pipes are removedand the lsand falls into aconveyer K', by which it is delivered to a mill L, where it is mixedwith yfresh sand and '.water, and from' which itis elevated by aconveyer Mfto a screen N, and thence is discharged ,into a hopper O,ready 'd20 drying device to which the-flasks 'containing finished moldsmay be delivered after the for use when a flask is again positionedbelow the delivery' spoutl of such hopper. As fast -as the molds aremade they are rolledaway and lsprayed with graphite or ground coal, as.at P, and are then dried in ovens'indicated lat l?. The coresare theninserted and they are ready for casting. I have referred to the endofthe main pattern as being tapered, beveled or curved, in order toAfacilitate the ramming operation, and when I refer' to the end of themain attern as being tapered I ,desire to inc ude thereby notonly ataperl but any form of, bevel or curve 'which accomplishesthe de- 1` aflask, arranged above and in line with s'a1d sired results.

It is believed that the operation of the machine lwill be fullyand'clearly understood fromthe foregoing description taken inconnectlion with the accompanying drawings.

Many variations and changes in the details of construction andarrangement'. of parts of vthe machine might readily occur to personsskilled in the'art and still fall within ,the scope of my invention. Ido not desire, Y therefore, to be limited orrestricted to the exact andspecific details shown and described; but 1 Having'now set forth theobject and nature of my invention and a construction embodying theprinciples thereof, and having explained such construction, itslpurposes kand mode of operation, whatI claim as new and useful, and ofmy own invention, and. ldesire to secure by Letters Patent is 1. yIn amolding machine, a power cylinder, a carrying cylinder telescopedthereover, a pattern 'carried' by said carrying cylinder, a ask, andmeans for admitting power medium to said power ,cylinder to operate saidcarrying cylinder.

2. In a molding machine, a power cylinder, a pattern telescoped oversaid cylinder, a llask, means for supporting the sameinli'ne with saidpattern, `and means for admitting' pattern through theflask. v 3.- In amoldingmachine, a 'stationaryVV power cylinder, open at one end, apattern?-y telescoped over the open end of said cyhnder,..

line 'with said patternand means for ad-fmitting power mediuml to saidcylinder tog; fopenatne end, a flask,`means for supportmove said patterninto said ilask.`

4. vIn a molding machine, a stationary* power cylinder, open at one end,a carrying. lcylinder telescoped over the open end of said powercylinder, a pattern carried bysaid carrying c linder, a flask, means`for supporting said ask in line with said pattern, and means foradmitting power medium to-A saidpower cylinder. 5. In a molding machine,a power cylinder CLI " open at one end, a vcarrying lcylinder tele-jYscoped over the open end of said power cyhnder, a pattern telescopedover the carrycarrying cylinder, means for supplying a power medium tosaid cylinder to movesaid v deropen at' one end, a flask, means for supaflask, means for supporting said flask-inizi,

- power medium to said cylinder.

said cyl inderl i ing cylinder, a flask, means for' supporting vthe samein line with said attern, an means forvadmitting power me ium' to thepower cylinder.v

6. In a molding machine,. a stationary power cylinder, open at one end,'a'carr'ying cylinder also openat one end and sleeved over said powercylinder, and provlded w1th a support, a pattern sleeved .over saidcarrying cylinder and resting on saidsupport, a flask arranged in\linewith the pattern, and means for admitting power medium to the powercylinder. f

7. In a molding machine, a power cyhnder,

. cylinder, a pattern, telescoped over the upper end of said cyhnder,and means for sup.- plying a power medium to said cylinder.` 8. In amolding machine, apower cylinder,` a flask, means for centering andsupporting the flask above and in alinement withsaid cylinder, a pattern`removably telescoped, over 4the upper end of said cylinder, and meansforadmitting power medium to -said cylinder.

9. vIn a molding'machine, a power cylinder, a flask, means forsupporting ,and securing the flask'in alinement'with the power cylinder,a pattern telescoped over theend of the power cylinder, means forsupplying a heating medium 'to the interior o the pattern, yand meansfor supplying a power medium to said cylinder. 10. In a molding machine,a stationary power cylinder, open at one end, aA flask, means 'forsupporting and securing said flask in alinementv with said 'cyhnder, acarrying cylinder telescoped over the open end of said power cylinder,a'pattern sleeved over said 10.5 heating-mediumv to' they space betweenthe pattern andthe carrying cylinder and means for supplying a .powermedium to the power cylinder.. 7 1.1K. In a molding machine, a powercylining and said flask' in alinement with said cylinder," a* pattern ofgreater length than the'lle'ngthof the llask, and having a taperingclosed end, said pattern being sleevedover'the openend of the powerp1ston and means for admitting power medium to 13. In a molding machine,amain pattern,

v a flask, me-ans'for securing the same in alinement with the vmainpattern, and power mechanism for -advancmg 'the pattern `into fandwithdrawing lthe 'same from the flask, $.36"

in combination with an auxiliary socket pattern, arranged between thefiask. and the main pattern, and through which the lmainA patternoperates, and means independent of AtheVpower mechanism -for advancingthe socketpattern to its work. Y.

14.' In a molding machine, the'eoinbination with a flask anda mainpattern, of a socket pattern through which the main pattern operates, asupport'for the socket pattern, means for advancing the socket patternsupport towards the flask, vand means for adv justing the position ofthe -socket pattern in its support, towards and froinithe flask.

15. In a molding machine, the coinbination with a lask' and a main"pattern, of a socket pattern through which the main pat? 'jternoperates, aring arranged .to inclose and said pattern rests.

17. In a molding machii'ie, the-coinbina tion with ailask and a mainpattern, ol' a socket pattern through which then-iam pattern operates, aring in which said socket pattern is adjustabljr supported and'in'closed power ine'chai'iism l'or moving said ring to carry saidsocket pattern towards and l'i'ein the ilask, and power mechanism l'oi'actuating the main pattern.

18. In a molding machine, a main pattern having a projection, a llask,means l'orsccui' ing the llash in a'lineinent with 'the main pattern,`and mechanism. for operating the main. pattern, in combination with .asocket pattern, a support'therefor, means for moving said support toadvance the socket pattern to its work, theproiection on the mainpattern arranged to engage the socket pattern i and force the-saine intoits woridng position as the inain pattern completes its work.

19. Ina molding machine, a llask, means for supporting the same, asocket pattern arranged below the llask supporting means, a

supportingl ring therefor, a' main pattern,`

means .located below the socket pattern and flask for advancing the mainpattern through the socket pattern. and into the ilask, and withdrawingthe saine, and ineansd'or inaintaining the socket pattern in its workingposition during the withdrawal movement of the main pattern.

20. In a molding machine, a socket pattern, a supporting ring in whichsaid pattern is movably supported, plungers carried by aaid ring,cylinders in which said plungersl operate .and adapted to receive anoperating.

medium.

21. In a moldinginachine, a ias'k, a pattern and means for advancingsaid `pat-tern into and withdrawing ythe same frein said flask',` incombination with a measuring tube adapted to be supported and centeredupon.

Athe end of the pattern, and to bemoved thereby, and means forcenteringsaid meas-v uring tube within the flask.

In a molding machine, fli'laslgapat-` tern having a seat formed on theVend thereof,

lan lmeansi for advancing said pattern into and withdrawing the samefrom said flask,

in combii'iation with a measuring tube centered at one end upon the seatin theI end of the pattern, and afspider'forcentering the other end ofsaid tube in the tlask.

23. In a molding machine, a flask, a pattern, andrneans for advancingsaid pattern into an'd'withdrawing the saine from said Ilask, incombination with a measuring tube,

adapted to be inserted through the flask and to be centered therein uponthe'end of the pattern, and means for suspending said tube.

24... ln a inoldingmachine, a ',l'lask, apattern, andinea-nsforadvancing saidpatterii into andl withdrawing the vsaine frornsai'dllask, in combination with ameasuring tube,vv adapted to be insertedthrough the tlask and to be centered therein, and acounterbalancinglmeans for suspending said tube.

In a molding machine a ilask, a power cylinder arranged in linethere-with, ,a mai-nA pattern ol" greater length than the. flask and.4 I

sleeved over the end ol' the cylinder and means for moving. 'saidpattern alongthe cylinder, in combination witha spigotpat` tern andmeans l'or detachably securing the spigot pattern to the' ond oftheinain p at tern. p f

26. In ainolding machine, a flask, a spigot pattern, inea-ns forsupporting the same- Vllask, Ameans l'or advancing 'said main pat- .oversaid llask, -a main patternl arranged4 bef low the llask, and of greaterlength than the" ternthrough the ilaskwliereby saidspigot.

pattern ,may be received on the protruding end thereof, and means fordetachably securv ing the spigot pattern upon thegend ofthe mainpattern,

27. In a molding inachine,vaflask, a main pattern, and ineans' for.movingI the samel throughout thel'lask, in combination with a measuringtube adapted to be received on the end of the main pattern and .to beforced out of the iiask asl the inainv pattern advancesy therethrough, aspigot pattern.

through which said measuringtube passes,

. whereby, vwhen the end of the mainpatternl emerges from' the flask,the .spigot pattern may be receivedy thereonandrnieans for detacliablysecuring the spigot pattern in place upon the end of the inain pattern.

,above the from the flask, and means'for securing the spigot pattern tothe main pattern,

29. In a molding machine, a flask, amain pattern, and means for adTancing the patternA into, and withdrawingsame from said flask, incombination with a spigot pattern and counterbalancing means forsupporting said spigot pattern in position te be receivedl on the end ofthe main pattern when the latter advances through the flask.

30. In a molding machine, a flask, a pattern, a carrying cylinder overwhich the' pattern is sleeved, andmeans for moving the carrying cylinderto force the pattern into the flask.

31. In a molding machine, a flask, a carrying trucktherefor, a mainpattern, a seat for said truck arranged in centered relation withrespect to the pattern, and means for lowering and securing the truckand askdn said seat.

32. In a molding machine, a flask fand a attern arranged` 1n line witheach other, said pattern having a tapering end, a measuring tube, meansfor suspending the same means for forcing the pattern into the flask.33. In a Vmolding machine, a flask and a pattern arranged in alinementwith each other, said pattern having its advancing end tapered,ameasuring tube, means for suspending the same above the flask and inposition to be inserted through the flask to e received at'one end andcentered upon the tapered end of the pattern, removable means forcentering "the other end of 'said tube within the flask, and meansforforcing the 34. In a molding machine, a fask, a main attern supportedvrbelowisaid flask and in ine therewith, an auxiliary socket patternalso arranged belowthe flask, and surrounding the main pattern, anindependent lsupport for said auxiliary pattern, the main and auxiliarypatterns and the auxiliary attern support closing the bottom of the llasWhile 4the sand is being supplied thereto, means for adjusting'. theposition of the auxiliary pattern witlnnl its 'support to regulate the.

quantity of sand to be supplied, andL means for operatingthe main andauxiliary patterns.

In amolding machine, a flask, a main atternarranged in line therewith,an auXil-.

lary pattern surroundin the-main pattern,

e Supportinfr the auxi larry patterninde'-V flask and in position to beinserted through the flask, to be received and centered' upon thetapering end Aof the pattern, and

' iliary pattern, a

pendent of the main pattern-and its support, means for advancing thepatterns to their work, and 'means for withdrawing the main andyauxiliary patterns, 'pattern support fromthe removal of the flask.

$36. In a molding machine, a flask, a truck upon which the flask iscarried, a main pattern, rails upon which the truck operates', saidrailshav'ing movable sections adjacent to saidpattern, means forlowering said rail sections and truck, to move the flask t0- fiask topermit the Iwardsthe pattern. and in centered relation the flask in'itsthereto, meansl for securing centered position, and means for forcingthe pattern into the flask.`

37. In a molding machine, a pattern, a carrying cylinder for saidpattern,` a power cylinder over which said carrying cylinder is sleeved,means for su plying power medium to said power cylin er, a casing inwhich said cylinders are mounted, a top plate for said casing providedwith an opening which the pattern is adapted to be moved, track railsmounted on said top late, and having inovable sections on eadh side ofsaid opening, a flask mounted on wheels adapted to operate on saidrails, andlifting and lowering. mechanism .for said rail sections,Whereby the flask and wheels may be lowered when in centered relationwith respect to the pattern.

38. In -a molding machine, a casing, a stationary cylinder centrallyarranged therein,

a main pattern sleeved over said cylinder, a

top for said casing having an opening throng which said .pattern may bemoved endwise, an auxiliary attern, surrounding the main pattern and trough which the main atter'n moves, van independent support for tfieauxflask, means for centering the same inline with the opening in thecasing top, a measuring tube adapted tobe inserted through the flask andto rest uponthe end of the main pattern, means the tube in the flask, aspigot pattern arranged above the the measuring tube to passtherethrough, whereby said spigot pattern may be received upon the endof the main pattern when emerges through the flask, means for detachablyvsecuring said spigot pattern to the end of the main pattern, and meansfor supplying operating medium to said cylinder.

39. In a molding machine, the combination of a flask, a main pattern, asocket pat,-

Veratin the main and socket patterns.

40. n a molding machine, amain casing,

through for centering' flask and in ,positionfor and the auxiliary etlloo

the other end of o i `a main pattern, a iiask supported upon the socketpattern is inovablyy supported, and

means for adjustingthe initialposition of said socket pattern initssupport.

42. Ina machine for forming sand molds', a` flask, amain pattern, andmeans for advancing the saine to its Work, in combination With a socketpattern, an inclosiiig ring therefor, said ring lhaving openingstherethrough,

.and removable pins adapted to be received in said openings and formingsupports for saidsocket pattern.

. 43. In a molding machine, thevvfcoiiibination of a flask, a mainpattern, a socket pattern, vand a measuring tube, said main patternoperating through thesocket pattern, the measuringtube being centered atone end by ythe endl ofj'the main pattern, means for centering the otherend of said tube within the iask, and means for moving .the main andsocket patterns to their work.

44. In a molding machine, the combination of a flask, amainA pattern, asocket `pattern, a measuring tube, and a supporting cas-' 'iiig for thesocket attern, means iormoving the main 'pattern' ongitudinally-throughthe lsocket pattern and it supporting casing, the 'measuring tubeybeing.eenteredat one end by the end of themain pattern and means for'pattern and flask, a measuring tube centered at one end by the end ofthe main pattern, means for centering the other end of said tube Withinthe 4flask', said'spigot pattern adapted to' be received upon theadvancing end of the main pattern when it emerges from the iiask, andmeans for in'oving the. y

main and socket patterns to their Work.

46. In a molding machine, a main pattern having a raminiiig head at theupper end thereof, a Iiask supported iii line with and over themain'pattern, the mainpattern being of greater length than the flask, asocket pattern at the lower `end `of the lflask and through which themain pattern operates, a displacing'tube supported by the upper end ofthe main pattern, and power mechanism for operating the main and socketpatterns. l

47. In a molding machine, a main pattern, and a flask, in combinationWith a=so`cket pattern, means for moving the saine into position toperform its Work of` formingand compressing the socket end of they mold,and

means for adjusting the initial position of said socket pattern relativeto. its moving means.

FRED HERBERT.

Witnesses: Y y

J. DINSDALE, T. BELL.

